喹啉不溶物类型与数量对中间相炭微球结构性能的影响学案.doc

喹啉不溶物类型与数量对中间相炭微球结构性能的影响 屈滨，郭明聪，刘海丰，和凤祥，刘书林，朱来福 （中钢集团鞍山热能研究院有限公司，辽宁 鞍山 114044） 摘要：以鞍钢中温沥青、针状焦副产中温沥青和精制沥青为原料，热缩聚法制备中间相炭微球（MCMB）。通过对比喹啉不溶物（QI）和中间相的显微结构，研究QI类型和数量对MCMB形成过程的影响。结果表明不同的沥青由于QI类型不同，中间相的形成过程存在差异，并影响MCMB的粒径、收率和性能；相同热处理条件下，同种沥青通过静置沉降法提高QI的含量使MCMB的收率增加，洗涤MCMB后得到的剩余沥青可进一步用做浸渍剂沥青。 关键词：中间相炭微球；喹啉不溶物；中间相 作者简介：屈滨（1967-），女，教授级高工，从事炭素材料研究。E-mail：guomingcong@163.com Influence of the type and the amount of quinoline insoluble on the structure and properties of mesocarbon microbeads QU Bin, GUO Ming-cong, LIU Hai-feng, HE Feng-xiang, LIU Shu-lin, ZHU Lai-fu (Sinosteel Anshan Research Institute of Thermo-energy Co., Ltd., Liaoning Anshan 114044, China) Abstract: Mesocarbon microbeads (MCMB) were prepared by thermal polymerization of Anshan steel?medium pitch,?by-product medium pitch?of needle coke and refined pitch.?The effects of the type and the amount of quinoline insoluble (QI) on the formation process of MCMB have been investigated through comparison of microstructural characteristics of QI and mesophase. The different types of QI in the raw material, it exerts an influence for mesophase formation, and further affect the particle size, yield and properties of MCMB. MCMB made in the presence of the pitch with high QI by precipitation method tend to have larger yield under the same heat treatment conditions. Residual pitch after washing MCMB can be further used for impregnating?agent. Keywords: mesocarbon microbeads, quinoline insoluble, mesophase Author introduction: QU Bin(1967-), professional engineer, engaged in the research of carbon materials. E-mail: guomingcong@163.com 1 前言 中间相炭微球（Mesocarbon microbead, MCMB）是一种新型炭素材料，由于具有层片分子平行堆砌的结构，又兼有球形的特点，球径小而分布均匀，并且有较大导电性、导热性及表面活性，成为高强度高密度各向同性石墨材料、锂离子二次电池电极材料、高比表面积活性炭材料和高效液相色谱的填充材料等的首选原料[1-5]。已广泛地应用于半导体工业、化学工业、机械工业、核能工业、新能源环保等领域。 MCMB的制备过程中，除了聚合条件对小球体的形成有重要影响外，原料中喹啉不溶物（QI）对中间相成核、生长和融并过程起着关键的作用[6-8]，并影响MCMB的聚结、结晶和粒径分布等方面。研究表明可在原料沥青中加入炭黑、石墨粉、焦粉及金属化合物等来控制MCMB的收率和粒 径分布[9, 10]。王成扬等[11-13]对以原生QI为核和MCMB的二次生长形成MCMB的过程进行了分析。有效控制M